RemBind™ Outperforms GAC in Adsorption of Dissolved Perfluorinated Substances in Water

Sensatec GmbH, an independent laboratory based in Germany, conducted a column study to compare the abilities of RemBind Plus, a product manufactured by Ziltek and distributed by Tersus Environmental, and granular activated carbon to remove perfluorinated substances from groundwater.

Results

The tracer study determined that a flow rate of 3.1 mL per minute would exchange a pore volume at 54 minutes. Results in figure below shows that there was minimal breakthrough of all tested compounds after 100 pore volumes had passed through the RemBind Plus column. The GAC column had breakthrough of the smaller PFAS compounds, PFBS and PFBA, after 1 pore volume.

Conclusion

The adsorption capacity of RemBind Plus for the smaller chain perfluorinated substances PFBA and PFBS is vastly superior to that of GAC. This is likely due to the presence of the non-carbon components of RemBind Plus creating unique physical chemical interactions with the smaller chain PFAS compounds.